Phenolphthalein CAS 77-09-8 Hoobkas nqi

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Phenolphthalein CAS 77-09-8

Khoom npe:Phenolphthalein

CAS:77-09-8 ib

MF:C20H14O4

MW:318.32 Nws

EINECS:201-004-7

Cim:tsim tawm

Pob:1 kg / kg los yog 25 kg / nruas

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Product Detail

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Khoom npe: Phenolphthalein
CAS: 77-09-8 Nr
MF: C20H14O4
PIB: 318.32
PIB: 201-004-7
Melting point: 261-263 ° C (lit.)
Kub taw tes: 417.49 ° C (kwv yees ntxhib)
Qhov ceev: 1.27 g / cm3 ntawm 32 ° C
Refractive Index: 1.5400 (kwv yees)
Kub: 24 ° C
PH: 7.8 ~ 10.0

Specification

Qhov tshwm sim	Dawb hmoov
Assay	99% min
Melting point	261-263 ° C (lit.)
Boiling point	417.49 ° C (kev kwv yees kwv yees)

Daim ntawv thov

1. Chaw tsim tshuaj paus Phenolphthalein CAS 77-09-8 siv los ua cov kua qaub-puag qhia thiab irritant laxative rau kev kho mob cem quav.
2. Acid-base indicator, non-aqueous titration indicator, chromatographic analysis reagent.

Txog Kev Thauj Mus Los

1. Ntawm peb lub tuam txhab, peb nkag siab tias peb cov neeg siv khoom muaj cov kev xav tau sib txawv raws li cov khoom xws li kom muaj nuj nqis thiab ceev ceev.
2. Txhawm rau ua raws li cov kev xav tau no, peb muaj ntau yam kev xaiv kev thauj mus los.
3. Rau kev txiav txim me me lossis cov khoom xa tuaj raws sij hawm, peb tuaj yeem npaj cov kev pabcuam huab cua lossis thoob ntiaj teb, suav nrog FedEx, DHL, TNT, EMS, thiab qee cov kab tshwj xeeb.
4. Rau kev txiav txim loj, peb tuaj yeem nkoj los ntawm hiav txwv.

Cia tej yam kev mob

Khaws kaw nyob rau hauv chav tsev kub.

Kev ruaj ntseg

Nws yog liab thaum yaj nyob rau hauv dilute alkali tov.

FAQ

1. Koj tus MOQ yog dab tsi?
RE: Feem ntau peb cov MOQ yog 1 kg, tab sis qee zaum nws kuj hloov tau thiab nyob ntawm cov khoom.

2. Koj puas muaj kev pab cuam tom qab muag?
Re: Yog, peb yuav qhia koj txog kev nce qib ntawm qhov kev txiav txim, xws li kev npaj khoom, tshaj tawm, kev taug qab kev thauj mus los, kev pabcuam kev lis kev cai, kev taw qhia kev, thiab lwm yam.

3. Ntev npaum li cas kuv tuaj yeem tau txais kuv cov khoom tom qab them nyiaj?
Re: Rau me me, peb yuav xa los ntawm courier (FedEx, TNT, DHL, thiab lwm yam) thiab nws feem ntau yuav raug nqi 3-7 hnub rau koj sab.Yog tias koj xav siv cov kab tshwj xeeb lossis kev xa khoom huab cua, peb tuaj yeem muab tau thiab nws yuav raug nqi li 1-3 lub lis piam.
Rau qhov ntau, kev xa khoom los ntawm hiav txwv yuav zoo dua.Rau lub sijhawm thauj, nws xav tau 3-40 hnub, uas nyob ntawm koj qhov chaw.

4. Yuav ntev npaum li cas peb tuaj yeem tau txais email teb los ntawm koj pab neeg?
Re: Peb yuav teb koj li ntawm 3 teev tom qab tau txais koj qhov kev nug.